B decays dominated by ω-ϕ mixing

Recently Belle has established the 90% confidence level (CL) upper limit B<9.4×10−7 for the branching ratio for B0→J/ψϕ, a process expected to be suppressed by the Okubo-Zweig-Iizuka (OZI) rule disfavoring disconnected quark diagrams. We use information on ω-ϕ mixing to establish likely lower bounds on this and related processes. We find that the Belle result is about a factor of five above our limit, while other decays such as B0→D¯0ϕ and B+→π+ϕ, for which upper limits have been obtained by BaBar, could be observable with similar improvements in data. We argue that a significant enhancement of our predicted decay rates by rescattering is unlikely.